YearPToutPBase 100
201196.69%100
201297.18%100.4
201395.23%100.8
201496.08%101.3
201595.35%101.7
201683.09%102.1
201798.96%102.5
2018100%103
201998.32%103.4
202099.06%103.8
202199.79%104.2
Evolution : 4 % entre 2011 et 2021 soit 0.37 % de gain par an.